节水灌溉控制系统总体设计 毕业论文.docx

摘要自动控制节水灌溉技术的高低代表着农业现代化的发展状况，灌溉系统自动化水平较低是制约我国高效农业发展的主要原因。本文就此问题研究了单片机控制的节水灌溉系统，该系统可对不同土壤的湿度进行检测，并按照作物对土壤湿度的要求进行适时、适量灌水。本作品是以STC12C5A60S2单片机为设计核心，主要由土壤湿度传感器，数据处理电路，显示电路，输出控制电路，故障报警电路等组成，软件选用C语言编程。单片机可将土壤湿度传感器检测到的土壤湿度模拟量转换成数字量，并显示于LCD显示屏上，根据设定值判断，若需灌水，则单片机系统启动鸣音报警，发出灌水信号，开启电磁阀进行灌水。该设计灵活性强，易于操作，可靠性高，具有方便、快捷和经济等特点，可根据土壤湿度及时灌溉。关键词： 单片机STC12C5A60S2、 节水灌溉、 自动控制AbstractThe level of auto-control water-saving irrigation technology reflects the development condition of agriculture modernization.The low automatic level of irrigation system is the main reason that prevented our agriculture’s development. Water-saving irrigation in this paper, the research on the issue of single-chip microcomputer control system, the system could be used for different soil humidity testing, and timely in accordance with the requirements of the crops on soil moisture, adequate water.This work is based on STC12C5A60S2 micro-controller design core.The bottom hardware system mainly consists of soil moisture sensor,signal transfer circuit,monitor display circuit,our port control circuit,malfunction display circuit and the procedure programmed with C assemble language. Single chip microcomputer can change the humidity of the soil moisture sensor to convert the amount of soil moisture to a digital quantity, and displayed on the LCD display. According to set value judgment, if need to infuse water, then single chip microcomputer system start singing sound alarm, signal to infuse water, open water electromagnetic valve. The high design flexibility, easy operation, high reliability, has the characteristics of convenient, quick and economic, to irrigation in time according to the soil moisture.Keywords: STC12C5A60S2 wireless, water-saving irrigation, auto-control目录1 绪论11.1 引言11.2课题背景及研究的目的与意义11.2.1 课题背景11.2.2 课题研究的目的与意义21.3 节水灌溉控制系统国内外的研究现状31.4课题研究内容32 系统总体设计方案42.1 系统工作原理42.2系统方框图设计42.3 系统结构52.3.1湿度检测模块52.3.2单片机模块52.3.3显示模块52.3.4输出控制模块52.3.5报警模块52.4主要器件的选取52.4.1单片机的选取52.4.2土壤湿度传感器的选取92.4.3显示器的选取102.4.4电磁阀的选